<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>1_非受控组件</title>
</head>
<body>
  <div id="test"></div>

  <script src="../js/react.development.js"></script>
  <script src="../js/react-dom.development.js"></script>
  <!-- Don't use this in production: -->
  <script src="../js/babel.min.js"></script>
  <!-- 引入prop-types.js  用于对组件标签属性进行限制 -->
  <script src="../js/prop-types.js"></script>

  <script type="text/babel">
    // 创建组件
    class Login extends React.Component {
      handleSubmit = (event) => {
        event.preventDefault()
        const {username, password} = this
        alert(`您输入的用户名是：${username.value}，您输入的密码是：${password.value}`)
      }

      render() {
        return (
          <form onSubmit={this.handleSubmit}>
            用户名：<input ref={c => this.username = c} type="text" name="username"/>
            密码：<input ref={c => this.password = c} type="password" name="password"/>
            {/*<button type="button">登录</button>*/}
            <button>登录</button>
          </form>
        )
      }
    }
    
    // 渲染组件到页面
    ReactDOM.render(<Login/>, document.getElementById("test"))
    </script>
</body>
</html>